Sun System? Diamond? low profile LEC? Brand 630 watt fixtures utilize cutting edge Light Emitting Ceramic? brand technology. State-of-the-art 95% reflective German aluminum interior offers unparalleled output, reflectivity and diffusion. The Diamond? LEC? Brand 630 has a Philips 50/60 Hz low frequency, square wave, highly efficient electronic ballast rated for 50,000 hour ballast life. Compact low profile design is ideal for tents for both primary and supplemental lighting applications. Power cord/plug configuration varies by fixture voltage. Includes 2 Philips brand highly efficient agriculturally engineered CDM-T 315 watt lamps that work in LEC? brand fixtures. This lamp creates amazing full color light spectrum out of next generation ceramic lamps. Higher amounts of beneficial UV and far red spectrums increase the lamp?s growth power to the plants. Very high 1.95 PPF per second light source (3100? K lamp). 3100? K or 4200? K color temperature, high 92 CRI, 33,000 initial lumens (105Lm/W). Long life 20,000 hour lamp. High 90% lumen maintenance at 8000 hr. High 85% PPF maintenance at 20,000 hr. Unique open rated lamp construction reduces radiant heat from the arc tube and is suitable for open fixture use. The 120 & 240 V fixtures have 2 on/off switches. The 277 V fixtures do not have an on/off switch. LEC 630?s do not contain the daisy chain receptacle. US Patent Pending: 29/576,151. Chinese Patent Pending: 2016304897995. One year warranty on lamps.